Mechanism for drilling and applying brake-band linings



`d Mmh 9;, 1926.-

C. E. CORSON ET AL MECHANISM'FOR` DRILLING AND APFLYING BRAKE BAND LININGS Filed'March 25, 122

March 9 1926. 1,576,135

c. E. coRsoN ET AL MEcHANzsM Fon DRILLING AND FLYING BRAKE BAND LININGs Filed March 25, 1922 2 sheets-sheet 2 vw /J tbor'neyq 50 frame, one of the legs slot 1 6 through whichl passes a Patented Mar. 9, 19.26.

UNITED STATES PATENT OFFICE.

cHALoN E. coRsoN AND WILLIAM-A. WRIGHT. or PHILADELPHIA, PENNSYLVANIA, AssIGNoRs To WRIGHT a coRsoN COMPANY, or PHILADELPHIA, PENNSYLVANIA,

L CORPORATION OF PENNSYLVANIA.

MEOHANISM FOR DRILLING- ANI) APPLYING BRAKE-BAND LINV'INGS.

Application mea March 25, 1922. serial No. 546,567.

To all lwhom z't may concern.'

Be it known that we, CHALON E. CoRsoN and WILLIAM A: IVRIGHT, citizens of the United States, and residents of Philadelghia, in the county ofQPhiladelphia and tateof Pennsylvania, have jointly invented an Improved Mechanism for Drilling and A plying Brake-Band Linings, of which t e following is a specification.

This invention is designed to facilitate e the ap lication of linings to brake bands.

It is c aracterized, inthe preferred construction and operation, by theuse of the brake band as a templet and anvil for a drill having a registering Adevicefor positionng the band and lining so that the tool, ada ted for borin a counter sunk hole in t e lining,will orm such hole in registration with the hole in the band, the

l band and lining being riveted together without separating them between the drilling and .riveting operation, with 'the' result that the work is done rapidly and correctly.

- In the accompanying drawings, Fig. 1

i is a broken side elevation of drilling mechanism comprised in the invention; Fig. .2 is a sectional view taken on the line 2"--2x of Fig. 1; Fi 3 lis a pers ective view of a detached detail of the mec anism, and Fig.

A 80 4 is a sectional view taken axially through the drill chuck of a modified construction. The mechanism illustrated comprises a frame 1 Vprovided with the horizontal bearings 2, inwhich is `journaled the shaft 35 having the beveled gear 4 fixed thereon,

and the vertical bearing'5, in which is jour.- naled the spindlel 6 having the beveledgear 7 fixed thereon in .engagement with the gear 4; the shaft 3 being driven by the motor-8 and drivingthe spindle 5 through the gears 4 and 7.

The spindle holder 9 inl the vsocket of .which is held the -drillbit 10 by theiset screw 11, the bit10 rt 12 provided the aperture-13 thereor. The bearing 12 has theebifurcations Aor legs 14 which are movable to-eiectad 'eis .piovided with the fooi l v415 passing through thebearing orwork sup-- tion having bifurcations on op osite sides of the bearing ,12. A coiled spring 21 connects .this levermechanis'm with the elbow arm 22 carried by the frame, whereby the mechanism is elevated, and a screw 23, movable through the member 19, engages the frame to limitvthe downward movement of the lever mechanism'so that the tops of its bifurcations on either side of the bearing 12 shall be approximatelyl level with the top thereof.

A guide rod and position finder 24 is movable freely through the horizontal member of the arm 22 in line with the bit l10 and into contact therewith, the rod having the laterallyprojecting part 23 at its top for preventing it from falling through the arm or limiting its downward Vmovement and serving as a handle. i

The work to be done involves the drilling of the fabric brake bandlining 25, sothat it shall have counter sunk -holes `26 therein registering with the holes 27 in the brake band 28, and the attachment othe lining to the band by the rivets 29 having their heads disposed within the counter sinks.

In carrying out the operation, the --lining 25 is placed inthe desired inal relation to the band 28 and, thus arranged, the lining is placed onthe bifurcations of -the lever mechanism 18 and over the bearing 12 so that the liner or guide rod 24 will enter the hole 27 in registration withwhich a hole 26 is to be drilled in the-lining. The band and'linng with the supporting mechanism 18 now being moved downward, the tool with the.

.or bit 10 'suitably constructed therefor bores bearing 12 and the relationof 4the bit 10 i to such bearing.

End holes having been formed inthe lining in registration with' end holes in the band, rivets are set therein, and with these rivets as an anchorage the lining is stretched 4in the desired final relation to the band,

, the further holes required are drilled therein as described and rivets are passed through such holes and the registering holes in the band, where'they are upset to secure the parts together.

As illustrated in Fig. 4, the adjustable bearing 12, for limiting the downward movement of the lining and the depth of the countersinks formed therein by the drill bit, may be omitted and a bushing 30 placed on the bit so as to rest on the tool holder 9 and project upwardlyso as to limit the downward' movement of thelining on the bit, bushings of di'i'erent heights being used as may be required by the thicknesses of the in registration with bra e band apertures,

which comprises a support forming a rest for a lining kon a band', a drilling and countersinkingJtool beneath said support, one ofsaid members being movable about 'an axis toward and from the other to eii'ect the drilling and countersinking of a lining on said support, and a guide 1n alignment with said tool above said support and adapted for registration with a lband aperture. 3. The mechanism for perforating linings in registration with apertures of brake bands which comprises a rotary tool, a support forminga rest having bearings on opposite sides of said tool for a lining and band,

one of said members being movable toward and from the otherto bring the lining into 'engagement with the tool, and a guide for effecting registration osaid tool with a band aperture.

4. In a machine for perforating and countersinking linings in registration with apertures of brake bands, the combination with a revoluble drilling and countersinking tool, of a work support comprising means;

for varying the depth of penetration of said tool into a lining, said tool project-ing through said work support into-engagement with a lining thereon, and a guide visibly indicating the position' ofsaid tool when concealed by said l 5. A"maehine for drilling and countersinking brake in registration with apertures of brake bands com rising a revoluble drilling and countersi ng tool and means for visibly indicating the position of said tool when concealed by a lining and band and comprising. an indicator normally movable by gravity toward said tool.

6. A machine for drilling and counter- Vsinking brake linings in registration with apertures of brake bands comprising a lwork supporting member, a revoluble drilling and countersinkin member, one of said members pivotal y mounted and movable tobeing war and from the other, and guiding means in alignment withsaid tool to permit'registrationtherewith of a brake band aperture.

7. A machinev for drilling and countersinking brake linings in ,registration with apertures of brake bands comprising a revoluble drilling'and countersinkin member and from said member.

and a work support comprising a ulcrumed" lever for movlng a band and lining towardv 8. A machine for drilling and countersinking 'brake linings in registration with a ertures of brake bands comprising a rev- -o uble drilling and countersinking tool, means visibly indicating theposition of said tbol'when concealed by a lining and band, i'

a bearing throu h which said tool projects fand by which t e penetration .of a lining by the tool is limited, said bearing and toolV being adjustableaxially of said tool,

and means for maintainingsaid last Anamed parts in adjusted sition.

9. A machine or drilling and sinking brake p apertures of brake bands compr' supporting a revoluble drilling an countersinkingtool, means visibly indicating the position of said tool when concealed by a counterlinings 1n registration with afi-ame lining and band, 'and' an apertured yoke throughwhich said tool projects, said yoke e. 10. A machine for drilling and counterhaving a pin and slot connection with said fram sinking brake in regiration with apertures of brake bands comprising a.

frame, a revoluble drilling and countermember, a work supporting member, one of said members comprising a lever fulcrumed relatively to said frame. a threadf ed device having a interposed between said fulcrumed member and frame for limiting the relative movement of said work support and tool, andv a guide indicating the position of said tool.

11. A machine for drilling and counterbrake linings in registration with apertures of brake bands comprisingja rev; oluble drilling and countersinking tool,v 'a

work support comprising a fulcrumed lever,A A

means ten to rock said lever on its fulcrumed an separate said work support .and tool, and adjustable means for the movement of'said work supporttoward said tool and limit thepenetration of a, lining thereby.

12. A machine fordrilling and countersinking brake linings in registration 'with apertures of brake bands comprising a. revollible drilling tool, a Work support com-` prising a spring supported member having a. bifurcated end forming arms moveble axially of said tool, and an adjustable device carried by seid member for' limiting the -16 penetration of a. lining by said tool.

In testimony -whereof we have hereunto setv our names this 18thday of January,

1922. l CHALON E. CORSON.

WILLIAM A. WRIGHT. 

